Migrate several ECC 6.0 system to single S4 HANA system by using SAP LT Server

I intend to Migrate SAP Procurement solution from several ECC 6.0 system to single S4 HANA system by using SAP LT Server.

Background:

I want to go step by step for this S4 HANA migration, so now i am only planning to migrate my Procurement solution to S4

My existing other solutions will still remain in ECC systems like PM , SD, HCM

So in a nut shell i want to use both the systems now , S4 as well as ECC

My Questions are :

To ensure i have right finance data in my S4 HANA system from my ECC systems to carry out procurement activities like PR , PO , contract creation, can i use SAP LT server for finance data replication ? like GL , Cost centre, profit center , wbs etc? Is there a list of objects which can be replicated from ECC to S4 via SAP LT server from finance perspective?

Can SAP LT server also help me to replicate data from SAP S4 HANA to ECC system? for e.g. once a contract is created in S4 HANA system i want to replicate/Distribute the contract to ECC systems. can SAP LT server help me in replicating data to and fro between SAP S4 and ECC systems?

If in case i use MDG system as a central master data system for vendor , material and service master data, can SAP LT server help me in replicating data from ECC systems to S4 HANA system?

It is an interesting idea however this is not a standard scenario for SAP LT:

As part of a Project you could use SAP LT Technologies in order to migrate the data from your ECC 6.0 systems to S/4HANA. This would be the first step in setting up a central S/4HANA System for your scenario with the respective data from the ECC6 system. However as this is not a preconfigured and released scenario, you would have to discuss with SAP’s DM & LT Services team to review the feasibility and complextiy of such a project. More Details can be found on the SAP Support Portal

With regards to an ongoing continous replication into an S/4HANA System during productive usage, SAP LT Server is currently only released with a preconfigured scenario for implementation of SAP S/4HANA as Central Finance System. Details on this use case can be found in SAP Note 2154420 . This is a one-directional replication of financial docuemnts from ERP Systems to SAP S/4HANA. I don’t think that SAP LT Server is the right technology for your purpose and may want to review if traditional ALE / IDOC Scenarios could support the scenario

If you already use a central MDG , I recommend you continue to use this as a leading system for all material / product & customer / supplier / business partner data and do not look in parallel at distributing these master data objects with SAP LT. Otherwise you might run into sequencing issues and may lose the benefit of having MDG as a leading system for these data objects

Therefore as a conclusion, i suggest to only look at SAP LT technologies for the initial setup of your S/4HANA System in order to manage the complex data migration by utilizing SAP’s DM & LT Services. Beyond this, i recommend to use other technologies to manage the integration in order to have a operate this scenario post GoLive.

I'm not an expert in data migration, but I think you may choosing the wrong tool to do the job.

ECC and S/4HANA are very different products in terms of underlying table structure, SLT will just simply copy a table from one system to another, but that table is useless to S4, unless you create an custom report to utilize it, but that's not the point of using S4 right?

Normally to migrate data into S4 on-premise, you have two options, one is using the flat file (excel file) method, there's a migration cockpit as of S/4HANA 1610 which will generate the relevant excel template and you have to fill in the data manually, it also support basic data validation before you start the actual import process.

There's also an advanced method called Rapid Data Migration Platform which runs on SAP Data Service platform 4.2, you connect your source ECC or MDG and target S4 through DS, it has some default objects/jobs covering the basic business needs like work center, vendor and customer master data etc. You can also develop your own project inside it. Compare to the flat-file method, it's a more comprehensive platform in terms of data validation, testing, and data quality.

Additionally, DS-SAP Data Services is a powerful ETL tool that connects to many systems and will bring Data into S4 and out of S4 into other systems. You have the capability of cleansing and transforming data on the way in to S4 and out of S4 and batch jobs can be scheduled or set up to pull data in real time and used for real time reporting purposes.

Additionally, DS-SAP Data Services is a powerful ETL tool that connects to many systems and will bring Data into S4 and out of S4 into other systems. You have the capability of cleansing and transforming data on the way in to S4 and out of S4 and batch jobs can be scheduled or set up to pull data in real time and used for real time reporting purposes.